Home / 1,250.24-1,725.30-690.74

Finding the Fourth Proportional to 1,250.24, 1,725.30 and 690.74

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Solution

The fourth proportional to 1,250.24, 1,725.30 and 690.74 is: 953.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,250.24 : 1,725.30 = 690.74 : x
  2. Step 2: Convert to fraction form
    1,250.24/1,725.30 = 690.74/x
  3. Step 3: Cross multiply
    1,250.24x = 1,725.30 × 690.74
  4. Step 4: Simplify right side
    1,250.24x = 1,191,733.72
  5. Step 5: Solve for x
    x = 1,191,733.72/1,250.24
  6. Step 6: Final answer
    x = 953.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.